Improvement in grooving and sizing minie balls



P. NAYLOR. GROOVING AND SIZING MINIE BALLS.

Patented May 17, 1864.

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UNITED STATES PATENT OFFICE.

PETER NAYLOR, OF NEW YORK, N. Y.

IMPROVEMENT IN GROOVING AND SIZING MINIE BALLS.

Specification forming part of Letters Patent No. 42,786, dated. May 17,1864.

To all whom it may concern:

Be it known that I, PETER NAYLOR, of the city and State of New York,have invented, made, and applied to use a certain new and usefulImprovement in Means for? Grooving and Sizing Mini-Rifle Balls; and I dohereby declare the following to be a full, clear, and exact descriptionof the said invention, reference being had to the annexed drawings,making part of this specification, wherein Figure 1 is a plan of mymachine, and Fig. 2 is a vertical section of the same.

Similar marks of reference denote the same parts.

The nature of my said invention consists in a revolving wheel combinedwith a curved.

gage that is nearer to thesaid wheel at the delivery end than at thepoint of entrance, where the balls are introduced, and by the rollingmotion brought to a uniform size and grooved by the action of saidrevolving wheel and stationary gage, and, combined with this equalizingand grooving mechanism, I introduce a revolving feed-plate, that conveysthe, balls to the sizing and grooving parts.

In the drawings, a is a vertical shaft, pro pelled by suitablemechanism. I have shown gear-wheels b b, a shaft, 0, and a crank, 01,for

this purpose. -The shaft-a projectsthrough the bed 6 and is fitted witha wheehf, that .is turned very accurately and has projecting ribs aroundits eurvedsides, which ribs are of a size and shape corresponding to thegrooves to beformed in the Mini balls. g-is a curved gage attached tothe bed e, and adjustable, so

that it will be distant from the periphery of the wheelf at the nearestpoint the exact distance required for the'diameter of the Mini ball, andthis gage may be provided with ribs toward the wheel f, corresponding,in shape and position to such ribs on said wheel f.

If, now, Mini balls,.resting with their base on the bed 0, be passed inregularly between the' wheelfandgage gsaid balls will be compressed andbrought to a perfect size while rolled along in said space, and will bedelivered therefrom perfectly uniform, and this operation may beperformed upon Mini balls either cast or formed with or without groovesaround them. In the one instance the grooves will be made entirely bythe operation of my mechanism, and in the other instance the grooveswill be thoroughly trued, and in both cases the diameter of the ball, iftoo large, will be brought to the exact size. v

In order to supply the balls more rapidly to this equalizer than theycould be entered by hand, I make use of the feeding-plate h, rotated bythe belt i or otherwise, and k is a stationary rim extending from thegage g and secured at the ends to the bed e. The surface ofthis bed 0and feeding-plate h are level with each other, and theattendant placesthe Mini balls on their bases, point upward, and presses them out towardthe rim 7c, near which they travel, and-are carried by the rotation of hto the entrance of the space between f and g to be equalized andgrooved, as aforesaid.

'Ihe red circles in Fig.1 illustrate the position of the Mini balls, andthe red lines in Fig. 2 showa ball between the wheel f and gage g. I donot claim equalizing Mini balls by a rolling motion, nor do I claim theoperation of milling employedin coining, but by my wheel and gage Iamenabled to equalize and groove Mini balls with greater rapidity andprecision than by any previous mechanism, and there is no risk of anyvariation in the size in consequence of any wear in the parts, and thedifficulties heretofore experienced with dies for equalizing, or cuttersfor trueing, or molds for accurately casting, are .all avoided, and I amenabled to groove such Mini'balls in the act of equalizing, thusentirely avoiding the difl icnlty heretoforeexperienced of casting orpressing such grooves in the balls.

I do not claim-compressing balls between a revolving and curvedstationary surface, as

globular balls have been prod need from astripof lead by such a device,as in. the patent of I. Brufl', January 4, I813; but

What I claim, and desire to secure by Letters Patent, is-

1. The wheel f and gage g, fitted, as specified, for equalizing the sizeof Mini balls, o-r for simultaneously grooving and equalizing suchballs, as specified.

2. The feeding-plate h and ring k, in combination with the wheelf andgage g, for thepurposes and as specified.

In witness whereof I have hereunto set my signature this 24th day of-December, 1863. PETER NAYLOR. Witnesses:

LEMUEL W. SERRELL, THOS. GEO. HARoLI).

